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Effect of fuel polycyclic aromatic hydrocarbon content on the emissions of polycyclic aromatic hydrocarbons and other mutagenic substances from a gasoline-fueled automobile

Journal Article · · Environ. Sci. Technol.; (United States)
DOI:https://doi.org/10.1021/es00173a010· OSTI ID:6770792
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Exhaust emissions from a fuel-injected, Otto engine equipped car driven according to the US Federal Test Procedure (FTP-73) were characterized chemically and by mutagenicity tests. Four fuel qualities of different polycyclic aromatic hydrocarbon (PAH) content were used. Emission variables investigated were regulated pollutants (CO, unburned hydrocarbons, NO/sub x/), particle emissions, emission of particle and gas phase associated polycyclic aromatic hydrocarbons, aldehyde emissions, emissions of benzene, toluene, ethene, and propene, and mutagenicity in particle and gas phases. The amount of formed PAH emitted in the exhaust is approximately constant. In fuels with low PAH contents a large proportion of emitted PAH was formed. Most of the cyclopenta(cd)pyrene and benzo(b and k) fluoranthene, greater than or equal to 80% and greater than or equal to 70%, respectively, is formed in the combustion process. All the exhaust samples, except one, in both the particulate phase and the gas phase, gave significant mutagenic effects on Salmonella typhimurium tester strains TA98 and TA100 with or without a metabolizing system (S9). Generally, the gas phase gave a higher effect compared to the particulate phase. The best correlation between emitted PAH and mutagenicity was found for the particulate phase and TA100+S9.

Research Organization:
Univ. of Stockholm (Sweden)
OSTI ID:
6770792
Journal Information:
Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 22:8; ISSN ESTHA
Country of Publication:
United States
Language:
English

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Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
ALKYLATED AROMATICS
AROMATICS
AUTOMOBILES
BACTERIA
BENZENE
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
COMBUSTION PRODUCTS
ECOLOGICAL CONCENTRATION
EXHAUST GASES
FLUIDS
GASEOUS WASTES
GASES
HYDROCARBONS
METABOLIC ACTIVATION
MICROORGANISMS
MUTAGEN SCREENING
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION
POLYCYCLIC AROMATIC HYDROCARBONS
SALMONELLA
SCREENING
TOLUENE
VEHICLES
WASTES